POPULATION ASSESSMENT DURING THE LARVAL STAGE OF THE ALFALFA WEEVIL, HYPERA POSTICA (COLEOPTERA: CURCULIONIDAE)
- 1 August 1975
- journal article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 107 (8) , 785-792
- https://doi.org/10.4039/ent107785-8
Abstract
This paper presents a sampling plan for estimating numbers of H. postica larvae in the spring growth of alfalfa. A 6-stem bouquet of foliage formed an appropriate sample unit. The pattern of counts for all four instars conformed to the negative binomial distribution, and variance analysis for 89 sets of data revealed that differences between block, plots, and quadrats generally were not significant. For moderate levels of infestation (ca. 12 larvae per bouquet), estimates with acceptable precision may be obtained by taking a single 6-stem bouquet from each of 16 randomly selected ft2 (0.9m2) quadrats within a field, at a total cost of 120 man-minutes.Keywords
This publication has 10 references indexed in Scilit:
- ESTIMATION OF EGG POPULATIONS OF THE ALFALFA WEEVIL, HYPERA POSTICA (COLEOPTERA: CURCULIONIDAE)The Canadian Entomologist, 1974
- EVALUATING THE EFFECTS OF HARVESTING ALFALFA ON ALFALFA WEEVIL (COLEOPTERA: CURCULIONIDAE) AND PARASITE POPULATIONS IN MICHIGANThe Canadian Entomologist, 1973
- NOTES ON THE SPATIAL PATTERN OF HYPERA POSTICA (COLEOPTERA: CURCULIONIDAE) ON ALFALFAThe Canadian Entomologist, 1972
- Sampling for the Egyptian Alfalfa Weevil: A Comment on the Sweep-Net Method12Journal of Economic Entomology, 1972
- Biology and Ecology of the Alfalfa Weevil, Hypera postica1 in Maryland and New Jersey. 1961 to 19672Annals of the Entomological Society of America, 1972
- A generalized set of discrete frequency distributions with Fortran programMathematical Geology, 1972
- Field Studies on the Biology of the Alfalfa Weevil, Hypera postica,1 in Northeast Mississippi2Annals of the Entomological Society of America, 1969
- Four Methods of Sampling to Measure Populations of Alfalfa Weevil Larvae13Journal of Economic Entomology, 1969
- Standardized Procedures Adopted for Cooperative Ohio Valley States Alfalfa Weevil ResearchJournal of Economic Entomology, 1969
- Standard Survey Procedures for the Alfalfa WeevilBulletin of the Entomological Society of America, 1966